8L-6557 Straight Fitting
Straight Adapter
Description
Cat® fluid-carrying adapters meet extremely high standards of quality and reliability. These adapters are manufactured to tight tolerances to ensure leak-free connections. Every Cat fluid-carrying adapter meets or exceeds industry standards for working pressure, assembly torque capability and corrosion protection to ensure long-lasting, reliable machine operation.
Features
- Wetted parts
- Meets or exceeds industry-standard part performance, providing leak-free connections
- Image provided is for reference only. Adapter construction may differ slightly from the image shown, but this part is interchangeable with the OEM part.
Applications
Adapters are used to connect fluid-carrying hoses and tubes to other system components. Refer to your Operation and Maintenance Manual or contact MECHSC for more information.
Specifications
| Hose Warning | Improper selection of hose and coupling combinations will void the warranty and may result in serious personal injury or death, property damage, or failure of components and machine systems. Cat® hose assembly products are designed and tested as a system to provide reliable connections that maximize hydraulic system safety and reliability. In addition, properly maintained, appropriate Caterpillar tooling is recommended to ensure hoses are crimped to technical specifications. Using Caterpillar hose with another manufacturer's couplings, or Caterpillar couplings with another manufacturer's hose, may result in unreliable, unsafe, or poorly performing hose assemblies. Caterpillar does not recommend or authorize this practice. For more information, refer to SAE J1273 Section 6.3 and ISO 17165-2 Section 6.3. |
|---|---|
| Material | Carbon Steel |
| Material Description | Plated Steel |
| Transmission and Hydraulic Oil Compatible Seals | 3J-7354 (7/16-20) |
| Oil and Fuel Compatible Seals | 214-7566 (7/16-20) |
| Coolant and DEF Compatible Seals | 6V-9027 (7/16-20) |
Compatible Equipment
- Generator Sets: 3512B, 3406C, 3516C, C4.4, C9, 3406B, 3512E, G3516, G3516C
- Track Loaders: 992, 824C, 953, 826G, 963, 824G
- Compactors: 814, 815, C9.3B, 816, C-9, C-15
- Engines: C27, C32, C7, C15, C6.6, C12, C18
- Excavators: 3456, 3512C, 3516B, 3508B, 3516E, 6040, 637G, 621G, 637E
- Asphalt Pavers: AD45, AD30, AD63
- Motor Graders: 3606, 120, 140G, 16H, 16, 140H
- Wheel Excavators: MD6250, MD6310, MD6200
- Dozers: D10, D6T, D7G, D6T LGP, D9L, D4E, D5H, D6R II, D6R XL, D6N, D7H, D5M, D8R, D6R III, D5N, D6R, D8L, D8N, D6M, D6R LGP, D9N, D6G, D11N
- Wheel Loaders: 988G, 950, 980G, 966F, R1600H, 992C, R1700G, R1700 II, R1300G, R3000H, R2900G, 972G, 990H
- Off-Highway Trucks: 794 AC, 796 AC, 7495, 740, 730, 735, 798 AC, 725, 773, 773E, 785D, 745, 785, 777D, 793, 740 GC, 740B, 789, 793D, 777, 771D, 745C
Additional information
| Machine Model | 120, 140G, 140H, 16, 16H, 3406B, 3406C, 3456, 3508B, 3512B, 3512C, 3512E, 3516B, 3516C, 3516E, 3606, 6040, 621G, 637E, 637G, 725, 730, 735, 740, 740 GC, 740B, 745, 745C, 7495, 771D, 773, 773E, 777, 777D, 785, 785D, 789, 793, 793D, 794 AC, 796 AC, 798 AC, 814, 815, 816, 824C, 824G, 826G, 950, 953, 963, 966F, 972G, 980G, 988G, 990H, 992, 992C, AD30, AD45, AD63, C-15, C-9, C12, C15, C18, C27, C32, C4.4, C6.6, C7, C9, C9.3B, D10, D11N, D4E, D5H, D5M, D5N, D6G, D6M, D6N, D6R, D6R II, D6R III, D6R LGP, D6R XL, D6T, D6T LGP, D7G, D7H, D8L, D8N, D8R, D9L, D9N, G3516, G3516C, MD6200, MD6250, MD6310, R1300G, R1600H, R1700 II, R1700G, R2900G, R3000H |
|---|---|
| Equipment Type | Excavators, Wheel Excavators, Wheel Loaders, Track Loaders, Dozers, Motor Graders, Off-Highway Trucks, Compactors, Asphalt Pavers, Engines, Generator Sets |
| Part Source | Genuine OEM |





